146 Lucina
A three-dimensional model of 146 Lucina based on its light curve.
|
|
Discovery[1] | |
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Discovered by | Alphonse Borrelly |
Discovery date | June 8, 1875 |
Designations | |
Main belt | |
Orbital characteristics[2][1] | |
Epoch December 31, 2006 (JD 2454100.5) | |
Aphelion | 433.156 Gm (2.895 AU) |
Perihelion | 380.397 Gm (2.543 AU) |
406.777 Gm (2.719 AU) | |
Eccentricity | 0.065 |
1637.739 d (4.48 a) | |
Average orbital speed
|
18.04 km/s |
152.155° | |
Inclination | 13.074° |
84.177° | |
143.509° | |
Physical characteristics | |
Dimensions | 131.893[2] km |
Mass | 2.4×1018 kg |
Mean density
|
2.0 g/cm³ |
Equatorial surface gravity
|
0.0369 m/s² |
Equatorial escape velocity
|
0.0699 km/s |
0.0496 ± 0.0107[2] | |
Temperature | ~169 K |
C[2] (Tholen) | |
8.277[2] | |
146 Lucina is a main-belt asteroid that was discovered by Alphonse Borrelly on June 8, 1875, and named after Lucina, the Roman goddess of childbirth. It is large, dark and has a carbonaceous composition.
Photometric observations of this asteroid made during 1979 and 1981 gave a light curve with a period of 18.54 hours.[3]
Two stellar occultations by Lucina have been observed so far, in 1982 and 1989. During the first event, a possible small satellite with an estimated 5.7 km diameter was detected at a distance of 1,600 km from 146 Lucina.[4] A 1992 search using a CCD failed to discover a satellite larger than 0.6 km, although it may have been obscured by occultation mask.[5] Further evidence for a satellite emerged in 2003, this time based on astrometric measurements.[6]
References
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- ↑ 2.0 2.1 2.2 2.3 Lua error in package.lua at line 80: module 'strict' not found. See Table 4.
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- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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